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2 years ago

Write the domain and range as inequalities

Mathematics

1 answer:

jeyben [28]2 years ago

3 0

Answer:

Domain: -∞<x<∞

range: -2≤y<∞

Step-by-step explanation:

domain is basically all the x values of the set. The parabola is facing up, meaning that it extends forever upward and out. This would mean the x values of the graph reach from neg to positive infinity

range is basically all the y values of the graph. The lowest y value, as shown by the vertex is -2. As said earlier, the parabola is facing upward, extending forever upward meaning that the highest y value is positive infinity

for infinity, always use these < or >

for numbers that are included in the graph such as -2 in this case, use ≤ or≥

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Answer:

Step-by-step explanation:

For c correct answers and 5 incorrect answers, James's score is ...

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Hey I’m struggling with number 13 so please show your work. Thx

Dafna11 [192]

Answer:

$\frac{5}{12}$

Step-by-step explanation:

Because $\frac{3}{5}$ is being multiplied by S, we can divide $\frac{3}{5}$ from both sides of the equation. This will give us:

$\frac{1}{4}$ ÷ $\frac{3}{5}$

But, that looks a bit hectic. Instead of dividing, you can multiply by the reciprocal (which is essentially how to divide fractions). So, instead of $\frac{1}{4}$ ÷ $\frac{3}{5}$ , you get:

$\frac{1}{4}$ × $\frac{5}{3}$

When multiplying fractions, remember you can just multiply straight across-- numerator x numerator, then denominator x denominator.

By doing that, you get the fraction $\frac{5}{12}$

$\frac{5}{12}$ cannot be simplified any more, so S= $\frac{5}{12}$ is your answer :)

I hope this helps

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2 years ago

You need to solve a system of equations. You decide to use the elimination method. Which of these is not allowed? 2x - 3y = 12

suter [353]

Answer:

Step-by-step explanation:

The Elimination Method is the method for solving a pair of linear equations which reduces one equation to one that has only a single variable.

If the coefficients of one variable are opposites, you add the equations to eliminate a variable, and then solve.

If the coefficients are not opposites, then we multiply one or both equations by a number to create opposite coefficients, and then add the equations to eliminate a variable and solve.

When multiplying the equation by a coefficient, we multiply both sides of the equation (multiplying both sides of the equation by some nonzero number does not change the solution).

So, option B is not allowed (it is not allowed to multiply only one part of the equation)

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2 years ago

80% of 60 is 1/5 of what number?

Oksi-84 [34.3K]

Well, if 80% of 60 is 48, and 48x5 is 240, 80% of 60 is 240.

Answer: 240

Hope this helps! Xo

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